Spin susceptibility in YBa2Cu4O8: 17O and 63Cu NMR study

G. q. Zheng, Y. Kitaoka, K. Asayama, Y. Kodama

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The 17O and 63Cu Knight shifts which are coupled to the spin susceptibility have been measured in the CuO2 plane and the CuO chain in the high-Tc superconductor YBa2Cu4O8. The shifts in the plane decrease with decreasing temperature, with small anomalies at Tc. In the chain, however, the shifts are temperature-independent in the normal state and those associated with the spin susceptibility along the Cu-O bonding decrease distinctly below Tc. Noting that the T-dependent susceptibility is dominated by the planar Cu2+, the hyperfine fields at Cu and O were estimated to be Hab(Cu2)=(185±10) kOe/μB and Hc(O 2,3)=(85±8)kOem/μB, in agreement with YBa2Cu3O7.

Original languageEnglish
Pages (from-to)1001-1003
Number of pages3
JournalPhysica B: Physics of Condensed Matter
Volume186-188
Issue numberC
DOIs
Publication statusPublished - May 2 1993
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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